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RIM LOCK.

No. 571,027. Patented Nov. 10, 1896;

UNITED STATES PATENT OFFICE.

VARREN H. TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOWVNE MANUFACTURING COMPANY, OF SAME PLACE.

RIM-LOCK.

SPECIFICATION forming part of Letters Patent No. 571,027, dated November 10, 1896.

Application filed December '7, 1895- Serial No- 571,424, (No model.)

T0 at whom it may concern.-

Be it known that I, VARREN H. TAYLOR, a citizen of the United States residing at Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Rim-Locks, of which the following is a specification.

My invention relates to an improvement in the construction of rim-locks which employ a duplex case, of which the outer case or cover is not essential to the operation of the lock proper and may be varied in design without changing the inner case or the construction of the lock. The inner lock is made in any desired manner and of any metal,as,for instance, wrought metal,and may contain any preferred form of locking or latching mechanism. In my improved lock the main cover fits over and incloses the lock proper. The openings for the knob-spindle and the key are placed symmetrically with reference to the top and bot-tom and face of the lock, and the openings for the lock and latch bolts, which may be of the same size, are also placed symmetrically, so that they can be used for a right or a left hand look by simply turning the case over and revers ing the latch-bolt. The lock with its inner case is complete and self-contained, and is capable of any use to which rim-locks are ordinarily put.

In order that my invention may be fully understood, I will proceed to describe the same with reference to the accompanying drawings, in which-- Figure 1 it a perspective View of the rimlock. Fig. 2 is a vertical section of the same, looking toward the face of the lock. Fig. 3 is a front view of the face of the lock. Fig. 4. is a horizontal section of the outer and inner case. Fig. 5 is a side view of the inner case; and Fig. 6 is an .edge view thereof, partly in section.

In the said drawings, A represents the inner case, which is formed in two parts, as shown, and which contains the lock or latch mechanism, as desired. It is provided with the usual knob-spindle and key openings, and the two parts are secured together and to the door in proper position by the screws Z. The two sections are further provided with the lugs or projections L, for the purpose hereinafter referred to. Y

13 represents the outer case or cover, which is adapted to be put over theinner case. It is provided on the inside with the lugs, projections, or formations C, which, when the case is put on over the lock and moved backward to engage with the lugs L, (see Fig. 4,) prevent the case or cover B from being removed. After the case is in position it is further secured to the door by screws, which pass through the face of the cover, or in any other desirable manner.

It will be understood that I do not limit myself to the particular method of engagement 6 5 between the outer and inner cases, as it may obviously be varied without departing from the spirit of the invention.

The case or cover 13 may be formed in any preferred manner and of any preferred metal, and it is provided with the key and knobspindle openings in the side of the case, and they are arranged in a symmetrical manner with regard to the face, top, and bottom of the case. a The case or cover is further provided with the face D, which is formed integral with the body portion, with the bolt and latch openings both of the same size and symmetrically arranged. Thus it will be seen that by reason of this symmetrical disposition of the several openings the case or cover can be used equally well whether the lock is used upon a right or left hand door; but it must be understood that this symmetrical disposition of the openings in the case or cover is not essential to many of the advantages of my invention, but is merely convenient in case it is desired to make the lock adjustable either to a right-hand or left-hand door.

From the above it will be observed that 0 when the door is closed the lock will have the same security as mortise-locks, inasmuch as the screws cannot be removed so as to take away either case as the case of ordinary rimlocks, and the only way the lock can be opened, therefore, is by the key or by violence.

As above stated, I do not limit myself to the precise arrangement shown for securing the outer case to the look, as the same result could xoo be accomplished by other means, as, for example,suitable lugs might be secured to a door instead of the lock and the ease slipped over them, and the advantage of my invention, so far as appearance and finish go, would also be substantially secured by securing the outer case by screwing it either to the inner case or to the door itself. It will also be understood that the case and lock can be finished up in any desired manner and maybe of any preferred design, and the case or cover may be made reversible or non-reversible, in the latter case it being unnecessary that the openings should be symmetrically arranged.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. In combination with arim-case, carrying a locking or latching mechanism, an outer case adapted to fit over and inclose said rimcase, substantially as described.

2. In combination with a rim-case carrying a looking or latching mechanism, an outer case adapted to fit over and inclose said rimcase, and provided with openings, arranged s) that the casing is applicable to the lock and the lock mechanism may be operated through it when applied to either a right ora left hand door, as described.

3. lhe combination of a rim-case carrying a locking and latching mechanism which is fastened to a door, an outer case adapted to fit over and inclose the rim-case, and suitable means for providing an engagement between the rim-case and outer case, substantially as shown and described.

4. In a rim lock or latch, the combination of an inner and an outer case, provided With means for engagement between the two, the outer case being also provided with means for fastening it to the door, so that it cannot normally be removed except when the door is open.

5. An outer case, adapted to fit over a rim lock or latch, said outer case being provided with means for fastening it to the door, which are not accessible when the door is closed, substantially as described.

IVARREN H. TAYLOR.

itnesses:

SOHUYLER MEnRrr'r,

1E0. IVHITE. 

